In his previous life, Nangong Yun was a shadow operative, but he vanished on the night of a critical mission. Reborn, he is now the dad at a kindergarten parents' meeting, smelling faintly of milk as he clumsily ties a bow on a little girl’s twin ponytails. But the peace is shattered when the anti-narcotics task force's lights flash and Li Feng sneers, holding up a paternity test. Worse still, the encrypted chip he has spent years searching for is hidden in his daughter's schoolbag. Now Nangong Yun must play three roles at once: a gentle dad, a former undercover agent, and a top hacker wanted by an international conglomerate. Seeking revenge for her father's death, Li Feng joins forces with the conglomerate to hunt him down, thwarting his efforts to protect his daughter and retrieve the chip. He must struggle to choose between protecting his daughter and fulfilling his duty to justice as an undercover agent. And if his identity as a top hacker is exposed, it will cost him his life. Though the male lead has memories of his previous life, he is still outmatched by his powerful enemies, and his identity leads to numerous misunderstandings with his daughter and the anti-narcotics task force. The conglomerate is closing in on the chip, while Li Feng keeps causing trouble, straining his relationship with the task force. But Nangong Yun uses the advantages of being reborn to plan his way through the crisis, gradually overcome each obstacle, and ultimately defeat his enemies, protect his family, and redeem himself as he makes his comeback. Yet even this victory comes with plenty of bitterness.
